Pressure-blower.



No. 882,478. PATENTED MAR. 17, 1908. C. NEUMANN. YRESSURE BLOWER.

APPLIOATION FILED JULY 31. 190;".

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Ill/l l'llll mism@ .member mounted within a casing UNITED STATES PATENT OFFICE.

CHRISTIAN NEUMANN, OF ST. LOUIS, MISSOURI, ASSIGNORTO NATURAL POWER COMPANY,

- I OF ST. LOUIS, MISSOURI.

PRESSURE-BLOWER.

Specification of Letters Patent.

Patented March 17, 1908.

Application led July 31, 1905. Serial No. 271,911.

To all whom it may concern:

Be it known that I, CHRISTIAN NEUMANN, a -citizen of the United States, and of St. Louis, State of Missouri, have invented certain new and useful Improvements in Pressure-Blowers, of which thefollowing is a specification. I A

y invention relates to improvements in pressure blowers, and consists of the novel eatures hereinafter described and claimed.

This application is a companion application to ap licants previous patent No. 804,028, issue November 7, 1905.

This invention is an improvement over applications filed bylme on blowers November 22, 1904, Serial No. 236,051, allowed April 21, 1905, and filed January 28, 1905, Serial No. 243,053.

The object of my invention is to construct a. blower having a revolving rectangular for producing an air current of great volume and velocity by the rapidly revolving of the rectangular member.

In the drawings-Figure 1 is a vertical sec'- tional view of my complete invention, taken on the vline 1`1 of Fig. 2, and viewing the same in the direction'indicated by the arrow. Fig. 2 is a vertical cross-sectional View taken on the line 2-'-2 of Fig. 1, viewing the same in the direction indicated by the arrow. Fig. 3 is a vertical cross-sectional view of the revolving-membor, taken on the line 2 2 of F 1. rl'plolving-member taken on the line 4 4 of the construction of the device as shown, I provide an outer casing 5, consisting of a body 6, located upon a suitable base 7. The casing 5 consists of the walls 8 and 9, and the outer rim 10, which forms the periphery of a housing in which is located a revolvingmember 11. The walls 8 and 9 are rovided with an inlet-opening 12, through W ch the air may pass into the casing, and in the center of each of said openings are located bearings 13 held in central position by arms 14. The walls 8 and 9 are each provided with a l groove 15, forming a guide or passage-Way in which are properly seated the projecting rings 16 formed on the sides of the revolvingmember 11. Within the casing 5 are formed partitions 17 (see Figs. 1 and 2), so located as to form passage-ways 18 by the over-lap- Fig. 4 is a cross-sectional view of the resident 1 creasing corner, and formlng which the air is passed by the rapid revolving mounted upon a shaft 31, su

ping ends. These partitions, as will be observed, form a receiving-chamber 19 of indiarneter from the starting-point to the outlet or discharge-pipe 20. The casing 5 is arranged tapering in forni that is to say the portion of said casing acting as the first air-passage, and indicated by the numeral 21 being of less width and size than the discharge-pipe 20, the purpose of which is to permit the proper expansion ofthe air. The revolving-member 11 consists of a casing comprising two Walls 22, a hub 23, and a plurality of partitions 24, said artitions extending outwardly from the ub to each passage-ways 25 through of said member. Air is admitted to each of the passages4 25 through the ports 26 formed in each side of the revo ving-member between the hub and walls. One end of four of the partitions 24 is rovided with a projection 27, and mid-way etween said projection and the opposite corner of the revolving-member is located a brid e 28, which is formed integral With the waIls, and acts as a brace, and also to support a strip of sheet-metal 29, held in osition u on the projection 27, bridge 28 an end 30 o the partitions by screws. The purpose of so constructing the revolvingmember is to be able to cast the Walls, partitions and hub in one casting, and thus dispense with an over-amount of metal. The revolvin member 11 is located Within the casing tween the partitions 17 and ported n the bearings 13 previously descri ed. The device is operated by means of the pulleys 32 located upon the shaft and driven by any suitable mechanism.

The operationof my invention is as follows: The revolving-member is rotated in the direction indicated by the arrow 3 in Fig. 1, collecting the air from the atmosphere,- through the ports 26, passing it through the passages 25 and discharging it into the charner of the casing occu led by the revolvingmember. The air de 'vered from the sages 25 assumes the direction indicated) by the arrows 4, and as each corner of the revolving-member strikes said current, it recured to me by the grant of Letters Patent, is: y

1. A pressure blower comprising a rectanular revolving-member, a housing, a hub orming part of the revolving member, partitions formed integral with the hub, and extending to the ends of the revolving member Jfour air-passages formed in the revolvingmember by said partitions and leading from the center to each corner, and each provided with inlets for the admission of air, the outer surface of the revolving-member formin corners .of erfect right angles, substantialy as as speci ed.

2. A device of the class described comprising a housing provided with air inlets and an air outlet, a revolving-member rectangular in form revolubly mounted Within said housing, a shaft supporting said revolvingmember, a hub formed in the revolvingmember by vwhich it is secured to the shaft and at which point openings are formed in the Walls of the revolving-member, partitions formed integral With the hub, and extending to the ends of the revolving-member and airassages formed by said artitions connecting the air inlets and disc arging the air into the housing during the revolution through discharge openings formed in the outer surface of the revolving-member, substantially as specified.

3. A device of the class described comprising a rectangular revolving .member, a housing, the rectangular revolving member composed ofl a hub, a plurality o'r' partitions extending radially from the hub and formed rectangular with the plurality of partitions forming passages through which the air is delivered under pressure, the sides of said revolving member provided with openings for the admission of air into the passa es around the hub, the outer ends of the revol ing member provided with openings through which the air is discharged from the passages, rings formed on the sides of the revolving member and grooves formed in the sides of the casing in which the rings project for the pur ose of steadying the revolving member Whi e in revolution, substantially as specified.

In testimony" whereof, I have signed my name to this speciiication, in presence of two subscribing witnesses.

CHRISTIAN NEUMANN. Witnesses M. M. BRAZILL, ALFRED A. EIoKs. 

